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