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