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