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