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