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