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