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