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