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