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