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