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