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