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