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