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