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