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