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