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