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