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