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