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