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