One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,9)(6,10)(11,14)(12,15)(13,16)(20,28)(24,31)(26,32)(29,30)(33,34,38,42)(35,39,40,36)(37,41,46,45)(43,47,48,44)(3,10)(6,7)(11,16)(13,14)(17,18)(19,23)(20,24)(21,25)(22,27)(26,30)(28,31)(29,32)(33,34)(35,39)(36,40)(37,41)(38,42)(43,47)(44,48)(45,46) involution — undirected(1,3)(2,6)(4,11)(5,10)(7,9)(8,13)(12,16)(14,15)(17,19)(18,22)(20,26)(21,27)(23,25)(24,29)(28,32)(30,31)(33,35,38,40)(34,39,42,36)(37,43,46,48)(41,47,45,44)(1,3)(2,7)(4,11)(5,10)(6,9)(8,14)(12,16)(13,15)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,34)(35,39)(36,40)(37,45)(38,42)(41,46)(43,44)(47,48) involution — undirected(1,4,5,12)(2,8,9,15)(3,11,10,16)(6,13,7,14)(17,20)(18,24)(19,26)(21,28)(22,29)(23,30)(25,31)(27,32)(33,36,38,39)(34,40,42,35)(37,44,46,47)(41,48,45,43)(1,2)(3,6)(4,8)(5,9)(7,10)(11,13)(12,15)(14,16)(17,18)(19,22)(20,24)(21,25)(23,27)(26,29)(28,31)(30,32)(33,37)(34,41)(35,43)(36,44)(38,46)(39,47)(40,48)(42,45) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.