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