One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,10,5,7)(4,12,14,8)(11,15,13,16)(20,28)(24,29)(26,32)(30,31)(33,34,39,37)(35,42,40,36)(38,41,47,45)(43,46,48,44)(1,3,6,5)(2,7,9,10)(4,13,14,11)(8,16,12,15)(17,18)(19,23)(20,29)(21,25)(22,27)(24,28)(26,30)(31,32)(34,37)(36,42)(41,45)(44,46)(17,19)(18,22)(20,26)(21,27)(23,25)(24,30)(28,32)(29,31)(33,35)(34,36)(37,42)(38,43)(39,40)(41,44)(45,46)(47,48) involution — undirected(1,2)(3,7)(4,8)(5,10)(6,9)(11,15)(12,14)(13,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,31)(28,32)(29,30)(33,36,39,42)(34,40,37,35)(38,46,47,44)(41,43,45,48)(1,4,6,14)(2,8,9,12)(3,11,5,13)(7,15,10,16)(17,20)(18,24)(19,26)(21,28)(22,30)(23,31)(25,29)(27,32)(33,37,39,34)(35,42,40,36)(38,45,47,41)(43,46,48,44)(1,5,6,3)(2,7,9,10)(4,13,14,11)(8,15,12,16)(17,18)(19,22)(20,24)(21,25)(23,27)(26,30)(28,29)(31,32)(33,38,39,47)(34,41,37,45)(35,43,40,48)(36,44,42,46)A 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.