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