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