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)(19,24)(20,25)(21,28)(22,23)(26,32)(27,30)(29,31)(34,40)(36,46)(41,43)(44,45)(1,3)(2,7)(4,8)(5,13)(6,11)(9,12)(10,15)(14,16)(17,18)(19,24)(20,29)(21,26)(22,23)(25,31)(27,30)(28,32)(33,34)(35,41)(36,42)(37,43)(38,44)(39,40)(45,48)(46,47) involution — undirected(2,8)(4,7)(9,16)(12,14)(18,23)(19,27)(25,29)(26,28)(33,35,39,37)(34,41,40,43)(36,45,46,44)(38,42,48,47)(1,4,6,7)(2,3,8,11)(5,14,15,12)(9,13,16,10)(17,19,22,27)(18,24,23,30)(20,26,31,28)(21,25,32,29)(33,36)(34,42)(35,45)(37,44)(38,43)(39,46)(40,47)(41,48)(1,5,6,15)(2,9,8,16)(3,10,11,13)(4,12,7,14)(17,20)(18,25)(19,28)(21,24)(22,31)(23,29)(26,27)(30,32)(33,37,39,35)(34,43,40,41)(36,45,46,44)(38,42,48,47)(1,3)(2,7)(4,8)(5,13)(6,11)(9,12)(10,15)(14,16)(17,21)(18,26)(19,25)(20,30)(22,32)(23,28)(24,31)(27,29)(33,38,39,48)(34,44,40,45)(35,42,37,47)(36,43,46,41)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.