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