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