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