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