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)(11,16)(12,14)(13,15)(17,18)(19,24)(20,32)(21,26)(22,36)(23,27)(25,35)(28,44)(29,39)(30,40)(31,46)(33,48)(34,43)(37,42)(38,45)(41,47) involution — undirected(2,5)(6,8)(9,11,13,12)(10,14,15,16)(17,19)(18,24)(20,33)(21,30)(22,31)(23,29)(25,41)(26,40)(27,39)(28,34)(32,48)(35,47)(36,46)(37,45)(38,42)(43,44)(11,12)(14,16)(17,20)(18,25)(19,28)(21,35)(22,37)(23,34)(24,38)(26,43)(27,42)(29,33)(30,45)(31,47)(32,36)(39,41)(40,48)(44,46) involution — undirected(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,14,15,16)(19,29)(20,34)(24,39)(25,42)(30,31)(32,43)(35,37)(40,46)(11,12)(14,16)(17,21,23,22)(18,26,27,36)(19,30,29,31)(20,35,34,37)(24,40,39,46)(25,43,42,32)(28,45,33,47)(38,48,41,44)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.