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