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