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