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