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