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